Each family may have some amount of boilerplate
locking code that applies to most, or even all,
commands.
This allows a family to handle such things in
a more generic way, by allowing it to
a) include private flags in each operation
b) specify a pre_doit hook that is called,
before an operation's doit() callback and
may return an error directly,
c) specify a post_doit hook that can undo
locking or similar things done by pre_doit,
and finally
d) include two private pointers in each info
struct passed between all these operations
including doit(). (It's two because I'll
need two in nl80211 -- can be extended.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Enable WME QoS in IBSS mode by adding a WME information element to beacons and
probe respones and by checking for it and marking stations as WME capable if it
is present.
Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Some drivers cannot handle multiple retry rates specified by the rc
algorithm but instead use their own retry table (for example rt2800).
However, if such a device registers itself with a max_rates value of 1
the rc algorithm cannot make use of the extended information the device
can provide about retried rates. On the other hand, if a device
registers itself with a max_rates value > 1 the rc algorithm assumes
that the device can handle multi rate retries.
Fix this issue by introducing another hw parameter max_report_rates that
can be set to a different value then max_rates to indicate if a device
is capable of reporting more rates then specified in max_rates.
Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Initialize the rate table for WDS interfaces, and
add cases to allow WDS packets to pass the xmit and receive
tests.
Signed-off-by: Bill Jordan <bjordan@rajant.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Added a nl interface to set the peer bssid of a WDS interface.
Signed-off-by: Bill Jordan <bjordan@rajant.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
On association to an AP, after receiving beacons, the beacon_crc value is set.
The beacon_crc value is not reset in disassociation, but the BSS data may be
expired at a later point. When associating again, it's possible that a
beacon for the AP is not received, resulting in the beacon_ies to remain NULL.
After association, further beacons will not update the beacon data, as the
crc value of the beacon has not changed, and the beacon_crc still holds a
value matching the beacon. The beacon_ies will remain forever null.
One of the results of this is that WLAN power save cannot be entered, the STA
will remain foreven in active mode.
Fix this by adding a validation flag for the beacon_crc, which is cleared on
association.
Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Move ieee80211_scan_cancel() and all other related code to
ieee80211_restart_work() as ieee80211_restart_hw() is intended to be
callable from any context.
Fix a bug that RTNL lock is not taken during ieee80211_cancel_scan().
Take local->mtx before WARN(test_bit(SCAN_HW_SCANNING, &local->scanning)
to prevent the race condition with __ieee80211_start_scan() described
here: http://marc.info/?l=linux-wireless&m=128516716810537&w=2
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Add missing unlocking of the wiphy in set_channel,
and don't try to unlock a non-existing wiphy in
set_cqm.
Cc: stable@kernel.org [2.6.35+]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Enable management frame transmission and subscribing
to management frames through nl80211 in both cfg80211
and mac80211. Also update a few places that I forgot
to update for P2P-client mode previously, and fix a
small bug with non-action frames in this API.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Some user space applications only want to display survey data for
the operating channel, however there is no API to get that yet.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This patch fixes an refcounting bug. Previously it
was possible to corrupt the per-device recv. filter
and monitor management counters when:
iw dev wlanX set monitor [new flags]
was issued on an active monitor interface.
Acked-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Choose first available phyX name when creating phy devices. This
means that reloading a wifi driver will not cause a change in the
name of it's phy device.
Also, allow users to rename a phy to any un-used name, including
phy%d.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The WMM parameter configuration function (ieee80211_sta_wmm_params) only
configures the WMM parameters to the driver is the wmm_last_param_set
counter value is changed by the AP.
The wmm_last_param_set is initialized to -1 on association in order to ensure
the configuration is made to the driver at least once on association, but
currently this initialization is done *after* the WMM parameter configuration
function was called.
This leads to unreliability in the driver getting properly configured on first
association (depending on what counter value the AP happens to use.) When
disassociating (the wmm default parameters are configured to the driver) and
then reassociating, due to the above the WMM configuration is not set to the
driver at all.
On drivers without beacon filtering the problem is corrected by later beacons,
but on drivers with beacon filtering the WMM will remain permanently incorrectly
configured.
Fix this by moving the initialization of wmm_last_param_set to -1 before
ieee80211_sta_wmm_params is called on association.
Signed-off-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
IBSS started from wireless extensions is currently
missing basic rate configuration, fix this by moving
the code to generate the default to the common code
that gets invoked for both nl80211 and wext.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Association is dealt with as an atomic offchannel operation,
we do this because we don't know we are associated until we
get the associatin response from the AP. When we do get the
associatin response though we were never clearing the offchannel
state. This has a few implications, we told drivers we were
still offchannel, and the first configured TX power for the
channel does not take into account any power constraints.
For ath9k this meant ANI calibration would not start upon
association, and we'd have to wait until the first bgscan
to be triggered. There may be other issues this resolves
but I'm too lazy to comb the code to check.
Cc: stable@kernel.org
Cc: Amod Bodas <amod.bodas@atheros.com>
Cc: Vasanth Thiagarajan <vasanth.thiagarajan@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
commit 8c0c709eea
Author: Johannes Berg <johannes@sipsolutions.net>
Date: Wed Nov 25 17:46:15 2009 +0100
mac80211: move cmntr flag out of rx flags
moved the CMNTR flag into the skb RX flags for
some aggregation cleanups, but this was wrong
since the optimisation this flag tried to make
requires that it is kept across the processing
of multiple interfaces -- which isn't true for
flags in the skb. The patch not only broke the
optimisation, it also introduced a bug: under
some (common!) circumstances the flag will be
set on an already freed skb!
However, investigating this in more detail, I
found that most of the flags that we set should
be per packet, _except_ for this one, due to
a-MPDU processing. Additionally, the flags used
for processing (currently just this one) need
to be reset before processing a new packet.
Since we haven't actually seen bugs reported as
a result of the wrong flags handling (which is
not too surprising -- the only real bug case I
can come up with is an a-MSDU contained in an
a-MPDU), I'll make a different fix for rc.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Even if the reorder timeout timer fires while
scanning, the frames weren't received during
scanning and therefore shouldn't be dropped.
To implement this, changes to the passive scan
RX handler simplify understanding it, because
it currently checks HW_SCANNING independently
of a packet's in-scan receive status (which
doesn't make a big difference, since scan_rx()
will only pick up probe responses and beacons,
which can't be aggregated.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
If a station was found, then we'll have exited
the function already, so it is not necessary to
have a variable keeping track of it.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
There are now four instances of vaguely the same
code that does packet preparation, checking for
MMIC errors and reporting them, and then invoking
packet processing. Consolidate all of these.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The first argument to prepare_for_handlers is always
the sdata that can just be stored in rx data directly
(and even already is, in two of four code paths.)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This reverts commit cd87a2d3a3.
Author reports it conflicts with proper fixes, applied hereafter.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
If interface does not existk, when nl80211_set_power_save is called, (eg.
module has been unloaded) it has been causing kernel panic. Added new
goto target to avoid crash if get_rdev_dev_by_info_ifindex does not
return dev and rdev pointers.
Signed-off-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
When using multiple STA interfaces on the same radio, some
data packets need to be received on all interfaces
(broadcast, for instance).
Make the STA loop look similar to the mgt-data loop.
Also, add logic to check RX_FLAG_MMIC_ERROR for last
interface in mgt-data loop.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
The old ieee80211_find_sta_by_hw method didn't properly
find VIFS when there was more than one per AP. This caused
AMPDU logic in ath9k to get the wrong VIF when trying to
account for transmitted SKBs.
This patch changes ieee80211_find_sta_by_hw to take a
localaddr argument to distinguish between VIFs with the
same AP but different local addresses. The method name
is changed to ieee80211_find_sta_by_ifaddr.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Johannes Berg
Bruno Randolf
Helmut Schaa
Bill Jordan
Bill Jordan
Juuso Oikarinen
Stanislaw Gruszka
Felix Fietkau
Christian Lamparter
Ben Greear
Luis R. Rodriguez
John W. Linville
Teemu Paasikivi